Don"t forget to lock the door ______ you leave the room.
A: after
B: since
C: for
D: when
A: after
B: since
C: for
D: when
举一反三
- Don't forget _________ (lock) the door when you leave the laboratory.
- Don’t forget ________ the door before you leave the office. A: to lock B: locking C: locked D: to locking
- Don’t forget (lock) the doors when you leave your car in the parking lot.
- Don't forget ______the door when you leave the classroom. A: to close B: closing C: close
- Don’t forget to lock the door! ______ to lock the door!